Frizzy patches of hair 3 months postpartum?!

Has anyone’s hair changed after giving birth? My daughter is almost 3 months old and on one side of my hair I have extremely frizzy patches! Iv never had anything like it before! I thought it was due to damage from colour or heat but I really don’t think it is! Iv damages my hair before but this is nothing like that! It’s so frizzy! 😩😩